Long way to fall: Lukas Michul, a member of the "Dream Walkers" jumps from atop the rugged cliffs overlooking Navagio beach on the Greek island of Zakynthos. "Dream jumping," or rope jumping, is similar to bungee jumping but from greater heights and with longer free falls.

Photo: Louisa Gouliamaki, AFP/Getty Images

Long way to fall: Lukas Michul, a member of the "Dream Walkers"...

Long way to fall: Lukas Michul, a member of the "Dream... Photo-6749238.92028 - SFGate

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Big Ben gets his clock cleaned: In London, rappelling technicians spruce up one of the faces of the Great Clock atop the landmark Elizabeth Tower, which houses Big Ben. Besides cleaning away any dirt that has accumulated since 2010, the last time the clock was serviced, the specialists will conduct a photographic survey to check the dials for damage.

Sick and abandoned: Saah Exco, a very sick 10-year-old boy, lies in a back alley of the West Point slum in Monrovia, Liberia. Saah was one of the patients pulled out of a holding center for suspected Ebola patients when the facility was overrun by a mob. A local clinic refused to treat the boy, according to residents, because of the danger of infection.